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Marquise|Natural|GIA

1.21ct I SI2 Marquise Natural Diamond

GD • I/SI2 • GIA 2558612489

Certificate GIA 2558612489

Diamond specifications and retailer prices

From HK$18,520 HKD
As of November 5, 2026
Save HK$13,382 HKD (42%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: HK$31,902 HKD at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2558612489. Listed at 11 retailers as of November 5, 2026, with prices from HK$18,520 to HK$31,902, a HK$13,382 spread on the same certified stone. Wholesale Diamonds Direct lists it at HK$31,902. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
I
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.03°
Pavilion angle42.12°
OriginNatural
Grading LabGIA
CertificateGIA 2558612489
Dimensions10.01 × 5.49 × 3.69 mm
L/W Ratio1.82
Culet sizeNone
Top View
10.01 mm5.49 mm1.21 ctI / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2558612489
Side View
Table 61.0%Crown 42.03°Girdle: THN-VTKPavilion 42.12°Culet: NoneDepth 67.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: HK$20,910 HKD|Low: HK$18,418 HKD|High: HK$34,489 HKD|Avg: HK$23,704 HKD|-8.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Wholesale Diamonds Direct
November 7, 2026
Retailer 5HK$18,520 HKD
Retailer 2HK$19,280 HKD
Retailer 6HK$19,609 HKD
Retailer 1HK$20,910 HKD
Retailer 9HK$21,341 HKD
Retailer 3HK$22,870 HKD
Retailer 7HK$23,034 HKD
Retailer 8HK$23,975 HKD
Retailer 4HK$25,135 HKD
Wholesale Diamonds DirectHK$31,902 HKD

42 data points across 10 retailers

11 retailersHK$18,520 HKD to HK$31,902 HKD

A
Cheapest Retailer
-
HK$18,520 HKD
A
Retailer 2
-
HK$19,280 HKD
View
A
Retailer 3
-
HK$19,609 HKD
View
B+
Retailer 4
-
HK$20,910 HKD
View
B+
Retailer 5
-
HK$21,341 HKD
View
B+
Retailer 6
-
HK$22,870 HKD
View
B+
Retailer 7
-
HK$23,034 HKD
View
B+
Retailer 8
-
HK$23,975 HKD
View
B+
Retailer 9
-
HK$25,135 HKD
View
B+
Retailer 10
-
HK$25,895 HKD
View
Most Expensive
B
Wholesale Diamonds Direct
584564609 · Nov 6
HK$31,902 HKD
$4,070 USD
View
10 more retailers have this diamond
Prices start from HK$18,520 HKDSave up to HK$13,382 HKD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.21ct Marquise
HK$18,520 HKD